splitmastream reads an MPEG audio stream from stdin, writes a copy of it to a file named YYYYMMDD.HH-streamname.mp3, and then writes the stream to stdout. You can think of it as a version of "tee" for hour-long chunks of MPEG audio. Files are switched on every hour at a frame boundary so that every file should be playable without noise at the beginning or end. splitmastream is useful for making an archive of an MPEG stream which is, for example, coming from an encoder and going to an icecast transmitter.
slookup is a simple program to do DNS lookups in parallel. It reads names or addresses (in dotted-quad format) on standard input and writes the lookup results on stdout, one entry per line. It looks up the first word (name or address) of each input line, and returns the whole line together with the lookup result, so it can conveniently be used for looking up addresses in log files.